i have gone through the standard draft P802.3ab/D6.0, in that nothing is mentioned about trellis coding for 1000BASE-T.

u have said in ur answer to one of the query

that

" Many simulations were run during the developmentof the 1000BASE-T standard and presented during its meetingsshowing that this is the case. There is already a well knowncompany that has 1000BASE-T transceivers on Silicon, andhas shown that they work in the last Interop gathering "

sir r those simulations available to study them and understand them indetail.